"Power Spectrum IEC 1/1-Oct Mag - dB SPL "
      "Hz"      "Data"
        16,       -200
      31.5,   57.58231
        63,   54.28757
       125,   48.77626
       250,   38.62835
       500,   54.84511
      1000,   53.17447
      2000,   49.19042
      4000,   45.47638
      8000,   32.50795
     16000,   24.49633